#include <iostream>
using namespace std;

int main()
{
#if 0
    int a = 100;
    auto num = 666;
    auto str = "hello world";
    cout << "num==" << num << endl;
    cout << "str==" << str << endl;
    auto *pNum = &a;
    cout << "*pNum==" << *pNum << endl;
    int arr[] = {123, 342, 5, 3, 675, 86, 67, 9, 879, 87, 0};
    for (int idx : arr)
    {
        cout << "arr==" << idx << endl;
    }
#endif
    auto num = 66;
    decltype(num) value = 777;
    auto str = "hello wrold";
    decltype(str) src = "wrold hello";
    cout << src << endl;
    return 0;
}